DOCUMENTATION


Collections computer documentation

 

RGB-image saving in format BMP or PICT

BMP or the PICT-file can be opened or placed as the bitmap image in Adobe Illustrator program. Both types of files can be imported to many multimedia applications.

However both of them are not accessible to the images using CMYK.

  1. Execute command Save As (to Save as) in menu File (File).
  2. Enter a name of a file and define a folder in which the file will be saved.
  3. Select format BMP, click by button Save to (Save) and then select the necessary option from section File Format (a file Format).
  4. Include one of options section Depth (Depth) - fig. 22.15 see.
  5. Select a compression method. Parameters for change of a level of compression of files in format JPEG are accessible only to the image with 32-bit resolution. The more low quality (quality) compression, the is better compressed a file. If further it is necessary to import a file to a multimedia application use resolution of 16 bits/piksel.
  6. Click by the button APPRX.

Fig. 22.15. Window BMP Options

File compression

To reduce file size, use compression programs, for example WinZip or PKZip. These programs compress a file without loss of any data.

If you do not have compression programs, use command Save As (to Save as) from menu File (File) and select format TIFF from pop up menu Format (Format). If want to save a file without alpha channels, remove flag Alpha Channels (Alpha channels). Click by button Save. In section Compression (Compression) of dialog box TIFF Options (the Option of format TIFF) install flag LZW or ZIP. Such compression also does not cause loss of the data. However consider, what not all applications can import a file in format TIFF at usage LZW or Zip-compression. And some applications import a similar file, only if it does not contain alpha channels.

If it is necessary to save the image for its subsequent printing, not to use format JPEG as at such compression the data is lost is better. Loss of the data can appear imperceptible on the screen, but will be visible at the press on printers with high resolution. JPEG-files are most convenient at file loading in a network.